Module diesel::dsl [] [src]

Includes various helper types and bare functions which are named too generically to be included in prelude, but are often used when using Diesel.

Reexports

pub use pg::expression::dsl::*;

Structs

now

Represents the SQL CURRENT_TIMESTAMP constant. This is equivalent to the NOW() function on backends that support it.

Functions

avg

Represents a SQL AVG function. This function can only take types which are Foldable.

count

Creates a SQL COUNT expression

count_star

Creates a SQL COUNT(*) expression

date

Represents the SQL DATE function. The argument should be a Timestamp expression, and the return value will be an expression of type Date.

exists

Creates a SQL EXISTS expression.

max

Represents a SQL MAX function. This function can only take types which are ordered.

min

Represents a SQL MIN function. This function can only take types which are ordered.

not

Creates a SQL NOT expression

sql

Use literal SQL in the query builder

sum

Represents a SQL SUM function. This function can only take types which are Foldable.

Type Definitions

And

The return type of lhs.and(rhs)

AsExpr

The type of Item when converted to an expression with the same type as TargetExpr

AsExprOf

The type of Item when converted to an expression of Type

Between

The return type of lhs.between(rhs..rhs)

Eq

The return type of lhs.eq(rhs)

EqAny

The return type of lhs.eq_any(rhs)

Filter

Represents the return type of .filter(predicate)

Find

Represents the return type of .find(pk)

FindBy

Represents the return type of .filter(lhs.eq(rhs))

ForUpdate

Represents the return type of .for_update()

Gt

The return type of lhs.gt(rhs)

GtEq

The return type of lhs.ge(rhs)

InnerJoin

Represents the return type of .inner_join(rhs)

LeftJoin

Represents the return type of .left_join(rhs)

Like

The return type of lhs.like(rhs)

Limit

Represents the return type of .limit()

Lt

The return type of lhs.lt(rhs)

LtEq

The return type of lhs.le(rhs)

Not

The return type of not(expr)

NotBetween

The return type of lhs.not_between(rhs..rhs)

NotEq

The return type of lhs.ne(rhs)

NotLike

The return type of lhs.not_like(rhs)

Offset

Represents the return type of .offset()

Order

Represents the return type of .order(ordering)

Select

Represents the return type of .select(selection)

SqlTypeOf

The SQL type of an expression

Update

Represents the return type of update(lhs).set(rhs)

date